/Engine/Plugins/Runtime/RigVM/Source/RigVMDeveloper/Public/RigVMModel/Nodes/RigVMParameterNode.h
The Parameter Node represents an input or output argument / parameter of the Function / Graph. Parameter Node have only a single value pin.
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(BlueprintType, Meta=(Deprecated="5.1")) class URigVMParameterNode : public [URigVMNode](API\Plugins\RigVMDeveloper\RigVMModel\URigVMNode)